the last stage of a rocket, which is traveling at a speed of 7600 m/s, consists of two parts that are clamped together: a rocket case with a mass of 290.0 kg and a payload capsule with a mass of 150.0 kg. when the clamp is released, a compressed spring causes the two parts to separate with a relative speed of 910.0 m/s. what are the speeds of (a) the rocket case and (b) the payload after they have separated? assume that all velocities are along th



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